ashton



0. ASHTON, DECD,

H. ASHTON, axzcunux.

PULLlNG-OVER MACHINE.

APPLICATION HLED NOV. 2, 1916'.

1 319,26 1 Patent-ed Oct. 21, 1919.

3 SHEETSSHEET 1.

Fig.1.

, nu; mziodnkvu co., WASHINGTON, D. c

0. ASHTON, DECD.

H- ASHTON. EXECUTRIX.

Puummovea MACHINE. I

Patented Oct. 21,1919.

APPLICATION FILED NOV. 2. I9l6.

3 SHEETSSHEET 2.

y #Wmz m 0. ASHTON, DECD.

H. ASHTON, EXECUTRIX.

PULLlNG-OVER MACHINE.-

APPLICATION FILED NOV. 2.19I6.

Patented Oct. 21, 1919.

3 SHEETSSHEET 3.

r L cnumam PLANOGRAPII- c0., WASHINGTON, m.c..

UNITED sTATEs PATENT OFFICE.

ORRELL ASHTON, DECEASED, LATE OF SVIAMPSCOTT', MASSACHUSETTS BY .HANNAHASHTON, EXECUTRIX, OF \VOLLASTON, MASSACHUSETTS, ASSIGNOR, BY MESNEASSIGNMENTS, TO UNITED'SHOE MACHINERY CORPORATION, OF JERSEY, A.CORPORATION OF NEW JERSEY.

PATERSON, NEW

PULLING-OVER MACHINE.

Specifieationof Letters Patent. v

Patented-Oct. 21, 1919.-

Application filed November 2, 1916; Serial No. 129,215.

To all whom it may concern:

Be it known that ORRELL Asrrron, late of Swampscott, in' the, county ofEssex and State of Massachusetts, deceased, invented certainImprovements in Pulling-Over Machines, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like reference characters on the drawings indicating likeparts in the several figures.

This invention relates to machines for use in the manufacture of bootsand shoes for pulling the upper materials over the last. The inventionis herein disclosed, by way of example, as applied to a machine of awell known type such as shown in United States Letters Patent No. 663,777, granted on Dec. 11, 1900 on the application of R. F. McFeely, and asembodied in mechanism for efiecting adjustment lengthwise of the last ofthe grippers which engage and pull the upper at the sides of the last.In the machine shown in said patent the side grippers are connected formovement simultaneously in opposite directions lengthwise of the lastfor the purpose of adjusting the upper in such manner as to position theti line in the proper transverse relation to, the last, and similarmovement also may be impart- 30 ed to one of the grippers, selected bythe operator, independently of the other gripper, both for angularlyadjusting the tip. and for positioning the tip seam at the properdistance from the toe end of the shoe. An important object of thisinvention is to provide an improved construction of gripper adjustmentmechanism whereby adjustment may be more readily and accurately effectedV r and the upper maybe more effectually re- 40 tained in the requiredposition than'in prior To the aboveand other ends, an important featureof the invention consists in the combination with a gripper adjustablelengthwise of the bottom edge of; last, of novel means for retaining;the gripper in any position of adjustment againstthe'tendency todisplace the gripper-from such position in the subsequent operation ofthe-T inachine upon the shoe. 'The construction shown comprises frictionmeans normally effective to insure against accidental 'displacement'ofthe gripper while permitting manual adj ustment of the gripper in eitherdirection. The lnvention also provides novel means for re leasing thegripper to permit its return movement lengthwise of the edge of the lastto a normal position of rest, and such means constitutes, anotherimportantfeature. In the construction shown the invention is illustratedin its application to side grippers which are adjustable lengthwise ofthe last for tip straightening.

' A further feature of'the invention consists in a novelv combinationand arrangement comprising opposite side grippers either or bothof whichmay be adjusted lengthwise of the last, each independently of the other,whereby precise and accurate adjustment of the upper on thelast isfacilitated. The construction herein shown includes means for moving theside grippers together toward the toe end of the last for the purpose ofeffecting in a well known manner a forward draft of the upper, and afurther feature of the invention resides in the comessarily limited to aconstruction includ ing provision for a forwarddraft' of the 7 upper.

The above and other features of the in vention, including certaindetails of con-' 'Stl'llCtlOIl and combinat ons of p now be describedwith reference to the accompanying drawings and pointed out intheclaims. j p

In the drawings Figure '1;.is a view in side. elevation of'a portion ofa pulling-overmachinefincluding mechanism in wh ch the invention is embodied.

Fig. 2 is a perspectiveview' of the "side grippers and'as'so'ciatedparts-with 'a'por I shaft 20.

tion of the mechanism broken away for the sake of clearness in theillustration,

Fig. 3 is'a viewin front elevation of a portion of the mechanism seen inFig. 2, with parts broken away for the sake of clearness, and

Fig. 1 is a view in side elevation of a portion of the structure seen inFig. 3.

The machine shown includes the usual toe gripper 2 and side grippersindicated generally by the numeral 4, the side grippers being suspendedfrom updraw levers 6 which are operatively moved in one direc tion tocause the side gripper jaws 8 to hold the upper firmly and to stretch itover the last, and in'the opposite direction to return the grippers tostarting position. The connections between the side grippers and thelevers 6, moreover, are such as to permit lateral movement of thegrippers in the usual manner to carry the margin of the upper over thebottom of the last and to cause the grippers to withdraw from the pathsof movement of the instrmnentalities which operate subsequently tofasten the upper in position.

The position of each of the side grippers 4 lengthwise of the last iscontrolled by a pinion 10 in engagement with teeth on a rack bar 12 towhich the gripper is connected. The connection between. the gripper andthe rack bar is such as to permit the gripper to move upward anddownward and also laterally with relation to the bar, the connectioncomprising a pair of rods 14 and 16 pivoted together and normallypositioned substantially at right angles to each other by engagement inslideways formed respectively on the rack bar and on the gripper.Operative movements of the grippers accordingly may be effected withoutmoving the rack bars and without interrupting their engagement with theteeth of the pinions 10.

Each pinion 10 is formed as a part of sleeve 18 which encircles a shaft20 and between which and the shaft there is provision for relativeturning movement. A bracket 22 bolted to atportion 23 of the machineframe in which the shaft 20 is journaled serves as a bearing in whichthe right hand sleeve 18 (Fig. 3) is rotatively mounted, and-the othersleeve is similarly ourn aled i a bracket 24- on a frame member 25 inwhich also the shaft 20 has a bearing. Clamped upon, the outer end ofeach sleeve 18 is a disk 26 towhich is connected a handle 28 whereby thesleeve may be turned on the The connection between the handle 28 and thedisk 26 comprises a ring 80 and spacing members 32 within which arebolts 3'71: which serve'to clamp the ring to the disk. By means ofwashers 36 the bolts 34 serve also to retain the handle members 28 onthe rings 30 i will now be apparent shaft 20. The members 26 and LO,which have plane faces for frictional engagement with the opposed planefaces of the washers 38, are caused to press upon the washers 88 by theaction of the wedge l2 positioned between an inclined bearing 43 on thestationary bracket 22 and a collar flwhich engages the right hand diskmember 26 (Fig. 3). .VVhen the wedge 42 is moved into its operativeposition, as indicated in Fig. 3, it thus serves to slide the right handdisk 2.6 together with the corresponding sleeve 18 toward the right topress the washer 88 between the disk and the casting 40, and after themovement of the right hand disk relatively to the casting 40 has beenstopped by the washer 38, contiuued movement of the wedge serves to 9move these parts and the shaft 20 together toward the right to cause thecasting i0 at the opposite end of the shaft to press the adjacent washer38 against the corresponding disk 26, endwise movement of. this disk andthe sleeve 18 on which it is mounted being prevented by engagement ofthe end of the sleeve with the frame member 25. By means of the wedge 42and the friction members 38 both sleeves 18 will thus be clutched to theshaft 20, the pressure on the friction members being suflicient toprevent accidental displacement of either of the grippers 4 relativelyto the other in directions lengthwise of the last while permittingeither gripper to be adjusted relatively to the other by means of therespective hand lever 28.

The wedge 12 is normally positioned, by means to be hereinafterdescribed, in such relation to the member 43 as to render the clutcheseffective to hold the sleeves 18 and the grippers in position. In orderthat either gripper may be readily and accurately adjusted as described,without affecting the position of the other gripper, means is proing ahub 50 loose on the left hand sleeve 18 and retained on the sleevebetween the disk member 26 and a collar 52' secured to the sleeve, aspring controlled pin 54 carried by the adjacent casting 4:0 andarranged to enter some one of an arcuate series of holes in the plate 48whereby the plate 1s locked to the shaft 20, and treadle means forturning the shaft through its connection with the plate. The treadleconnection for operating theplate 48 comprises a rod 56, downwardmovement of which serves to turn the plate and connected'parts in adirection to move the grippers forwardly, the reverse movement of thegrippers being effected through the operation of the usual treadlespring 57. As the parts are positioned in Fig. 2, the forward draft, aswell as the updraw has been efiected and the upper is under tension, thegrippers being locked in their foremost position by means of a springheld pin 58 which is carried bythe plate 48 and in this position of theparts engages under a catch 60 which may be conveniently carried by oneof the usual side tackerarms'. It will be understood that the forwarddrafton the upper is eflected after the side gripper jaws have closedupon the upper at some time prior to the operation of the tackinginstrumentalities, the tacker arms being positioned at this time attheir outer limits of movement with the catch 60 in position to beengaged by the pin 58. When the-side tacker arms move inward, after theupper has been stretched over the last, the catch 60 releases the pin58, whereupon the side grippers are moved rearwardly through the actionof the spring 57 as soon as they have released their hold upon thestock, the limit of rearward movement being de termined by theengagement of a lug 62 on the plate 48 with a stationary pin 64 7 As theparts are then positioned, therefore, the shaft 20 isirestrained fromturning in one direction by the pin 64 in engagement with the lug 62 andin the other direction by the action of the comparatively strong treadlespring, and with the parts positioned as; shown in Fig. 2, at the end ofthe forward draft of the grippers, the shaft 20 is restrainedfrom'movement in one direction by engagement of the pin 64 with a lug 66on the plate 48 and in the other direction by engagement of the pin 58with'the catch 60.

Movement of the grippers to adjust the position of the upper on the lastis prefer ably efi'ected while the upper is under tension at the end ofthe updraw movement and prior -to the-movement of the grippers for"drawing the "upper forwardly. In

order-to permit such adjusting movement of either gripper, the pressureupon the washers 38 is so proportioned to the strength of the treadlespring-that either gripper may be adjusted in one direction by move-'ment of the corresponding handle 28 without-causing the shaft to turn,movement of the shaft upon adjustment of either gripper in the oppositedirection'being prevented by the engagement of the pin 64c'withthe lug62.. Either gripper may thus be movedany desired distance lengthwise ofthe last independently of the other gripper, and after the relativeadjustment of the grippers has been effected they are maintained intheir relative positions by the clutch means which, without thenecessity for any action on the part of the operator, is normally incondition to hold the grippers in their adjusted relation. f The clutchmeans, moreover, provides a sufliciently positive connection with theshaft 20 to permit theforward draft of the upper to be effected by' theoperation ofthe treadle rod 56,

The position'of the wedge42is controlled through connection with apositively operated lever 68 (Fig. 1) which is'a portion of theillustrative type are provided whereby, I

in the final stage of the cycle of operations, the lateral movements ofthe grippers and the tacker arms are controlledj With reference to Fig;1, it will be understood that a movement of the lever 68'toward the leftcauses the grippers to move inward to carry the upper ,over the marginof the sole and also causes the tacker arms to move inward totackinserting position, the grippers be ing tripped through the inwardmovement of the tacker arms to cause'them to release their hold upon theupper before the tacks are driven, and that this movement .of the lever68 is followed by a reverse movement toward the right to relocatethegrippers and the tacker armsin their starting positions. As the lever 68moves toward the left the wedge 42 is forced out of its operativeposition by a connectionbetween the lever and the wedge comprising a rod70 and astop 72 on the'rod which engages a lug 74 on the wedgemember."Pressure on the clutch members 38 is thus released,permitting sprmgs 76whichfare positioned in chambers in the castings 40 to act upon pins '78 which project from the disks 26 into the chambers between oppositeends of there SPGCtIVG sprlngs, m such manner as to turn the sleeves 18relatively to the shaft-20 and relocate the grippers intheir normal '7r'relative'pcs tlonsas soon as they have re V78;between the ends of the"spring; :A nor 'mal angular position' of each sleeve518'on the shaftQO"is thus determined, "and a turn ing movement'off' the sleeverelativelyto th'elshaft causes the pin 7 8 re compress the spring bypressure applied at one end or the other, the opposite end of the springmeanwhile engaging the plate 80 as an abutment. It will be understoodthat the springs 76, while of sulficient strength to effect therelocation of the grippers, are not strong enough to overcome thefriction on the members 38 when the wedge 42 is in operative position.

After the side grippers have been returned to their normal relativepositions as above described, the movement of the lever 68 toward theright (Fig. 1) serves to set the clutches again by drawing the wedge 42into operative position. Between the lug 74 through which the rod isarranged to slide, and a nut 82 on the end of the rod is a spring 84which is compressed during this movement of the lever 68 to hold theclutch members engaged under yielding pressure.

In the operation of the machine, briefly summarized, the upper and thelast are placed in a position in the usual manner and the edges of theupper are entered in the grippers. At this time the side grippers 4 willoccupy their rearmost positions, the lug 62 on the plate 48 engaging thelimiting pin 64, and the wedge 42 will be positioned as shown forrendering the clutches at opposite ends of the shaft 20 effective tomaintain the grippers in their normal relative locations. The machinewill then be started and the updraw movement imparted to the grippers,whereupon the machine will again come to rest with the upper undertension. By manipulation of the handles 28 the operator may then moveone or both of the side grippers forwardly or backwardly as required forstraightening the tin and positioning the tip seam in the correctangular relation to the last. If a forward draft of the upper isdesired, the operator will then depress the treadle connected with therod 56 until the pin 58 engages beneath the catch 60, the pin 54 havingbeen previously entered in the proper hole in the plate 48 to determinethe desired limit of forward movement of the grippers. After theseoperations have been completed and the upper has been clamped in theusual manner at the sides of the last, upon a further actuation of thestarting mechanism movement of the lever 68 in one direction will beefiected to cause the grippers to carry the margin of the upper inwardover the sole and the tacker arms to move toward driving position, thegrippers finally 1 releasing their hold upon the upper and the tacksbeing driven to hold the upper in place, and by continued movement ofthe operating connections the movement of the lever 68 will be reversedand the parts will be returned to starting position. As the tacker armsmove inward the pin 58 is released and'the treadle spring renderedeffective through the rod 56 and the plate 48 to return the grippers totheir rearmost position, the return of the grippers taking place upontheir release from holding engagement with the stock. Through the firstmovement of the lever 68, moreover, the pressure on the friction members.38 at the ends of the shaft 20 is released in the manner explained andthe springs 76 are permitted to act upon the pins 78 to :turn thesleeves 1'8 and cause the grippers to assumeitheir normal relativelocations as soon as they have been tripped.v The movement of the lever68 in the opposite direction will then cause the wedge 42 to render theclutches at opposite ends of the shaft 20 again effective to retain thegrippers in their normal relative positions.

Having described the invention, what I claim as new and desire tosecureby Letters Patent of the United States is:

1. In a machine of the class described, a side gripper for pulling anupper over a last, said gripper being adjustably movable differentdistances lengthwise of the last, means for retaining the gripperinadjusted position, and positively operated means for operating saidretaining means to release the gripper.

In a machine of theclass described, a side gripper for pulling an upperover a.

last, said gripper being adjustable lengthwise of the last, a frictionclutch comprising opposed members having substantially plane faces infrictional engagement for retaining the gripper in any position-of saidadjustment, and means for maintaining said faces in frictionalengagement under pressure.

3. In a machine of the class described, a side gripper for pulling anupper over a last, said gripper being adjustable lengthwise of the last,and a friction clutch normally effective to retain the gripper in anyposition of said adjustment, said clutch including parts havingsubstantially plane opposed faces frictionally engaged under a pressurepermitting adjustment of the grip per to be effected against thefriction between said faces.

4. In a machineof the class described, a side gripper for pulling anupper over a last, said gripper being adjustablelengthwise of the last,a friction-clutch for retaining the gripper in any positionv of saidadjustment, and power operated means for rendering said clutch effectiveor ineffective to hold the gripper.

5. In a machine of the class'described, a

7 side I gripper for pulling an upper over 'a last,said gripper beingadjustably movable different distances 'lengthwlse of the last, meansnormally-efi'ective tor-retain the gripper in any position of saidadjustment, and

power'operated means for causing said retaming means to release thegripper.

. 6. In a machine of the class described,;a

side gripper for pulling an upper over a last, said gripper beingadjustable lengthwise'of the last, yielding. means for determining anormal position of said gripper while permitting adjustment of thegripper, means for retaining the gripper in adjusted position, andpositively operated means for operating said retaining means to releasethe gripper.

7. In a machine of the class described, a side gripper for pulling anupper over a last, said gripper being adjustable lengthwise of the last,a clutch for retaining the gripper in adjusted position, and meansoperative in-the final stage of the cycle of operation of the machine torelease and then to re-set the clutch. I r

8. In a'machine of the class described, a side gripper for pulling anupper over a last, said gripper being adjustable lengthwise of the last,yielding means for determining a normal position of the gripper, afriction clutch for holding the gripper in adjusted position, saidclutch including parts frictionally engaged under pressure permittingadjustment of the gripper to be eifected, and power operated means forreleasing the clutch to permit the return of the gripper and for thenre-setting the clutch.

I 9. In a machine of the class described, a pair of side grippers forpulling an upper at opposite sides of a last, and gripper positioningmeans constructed to permit both grippers to be adjusted lengthwise ofthe last each independently of the other, said positioning meanscomprising members rotatable for effecting the adjustment of thegrippers," connections between said members and the grippers, and meansfor engaging saidmembers frictionally during such adj ustment withpressure sufii'cient for holding the grippersin adjusted relation.

- 10. In a machine of the class described, a pair of side grippers forpulling an upper at opposite sides of a last, and means tending toprevent movement of said grippers lengthwise of the last, said meanscomprising friction clutches and connections between said clutches andthe grippers, the clutches being constructed to permit the grippers tobe adjusted difl'erent respective distances lengthwise of the last whilethe relatively movable parts of said clutches are in frictionalengagement under pressure sufficient to cause the clutches to retain thegrippers in adjusted position. c

11. In a machine of the "class described, a pair of side grippers forpulling an upper at opposite sides of a last, said grippers beingadjustable lengthwise of the last each independently of the other, and afriction clutch associated with each gripper for retaining it inadjusted position. j

12 In a machine of the class described, a

pairof side grippers for pulling'an'upper at opposite sides of a last,means for .po sitionin'g said grippers in a normal relation to eachother lengthwise of the last'while permitting them to be adjustedlengthwise of the last each independently of theiother, means forretaining the grippers in adjusted position, and means for operatingsaid retaining'means to release the grippers and permit them to resumetheir normal relation to each other. V

7 13. In a machine/of the class described, a pair of side-grippers forpulling an upper atoppositesides of a last, yielding means tending toposition said grippers in a normalrelation to each other lengthwise ofthe last while permitting them to be adjusted lengthwise of the lasteach independently of the other, a friction clutch associatedwith each 7gripper for retaining it in adjusted position,

and means for operating said clutches to release the grippers and permitthem to resume'their normal relation. 7 1

14:. In a machine of theclass described, a pair of side grippers forpulling an'upper at opposite sides of a last, said grippers beingadjustable lengthwise of the last each independently ofithe other, afriction clutch associated with each gripper and normally effective toretain the gripper in any position ofadju'stment, said clutches eachcom-' prising parts frictionally engaged under pressure permittingadjustment of the corresponding gripper to be effected, and means foroperating. said clutches to release the grippers at a definite point inthe cycle of operations or the machine. 7 p

15.7 A machine of the class described having, in combination, sidegrippers movable to pull an upper over a lastiand movable alsolengthwise of thelast, and operating means 'for moving the gripperstogether toward the toe end of the last while in engagement with theupper, said operating means being constructed to permit either gripperto'be moved also lengthwise of the last independently of the othergripper.

l6. A machine of the, class described having, in combination, sidegrippers movable to pull an upper'over alastandflmova ble alsolengthwise" of the last, and operating means for moving the gripperstogether toward the, toe end of the last while'invengagement with theupper, said operating also, leng hwise of the last, means for nor 7mally positioningsaid grippers in definite relative lo'cationslengthwise'of the; lasa'and, eperating means formovmg the grippers togethertoward the toe end of the last without affecting theirrelativepositions, said positioning and operating means being constructed toermit either gripper to be adjusted relatively to the other lengthwiseof the last prior to said combined movement of the grippers.

18. A machine of the class described having, in combination, sidegrippers movable to pull an upper over a last and movable alsolengthwise of the last, yielding means, for normally positioning saidgrippers in definite relative locations lengthwise of the last whilepermitting adjustment of either gripper relatively to the otherlengthwise of the last, means for retaining either gripper in theposition to which it is thus adjusted, and means operating through saidretaining means to move the grippers together toward the toe end of thelast Without affecting their relative adjustment.

19. In a machine of the class described, a side gripper movable. to pullan upper over a last, said gripper being adjustable lengthwise of thelast, means for holding the grip-- per in. adjusted position, and poweroper ated means for rendering said holding means alternately effectiveand ineffective to hold the gripper.

20. In a machine of the class described, the combination with a gripperadjustable lengthwise of the bottom edge of a last, of a member movableto adjust said gripper, meansv connecting said member to the grip per,and means for engaging said member frio'tionally during its adjustingmovement with pressure sufficient for retaining the gripper in anyposition of its adjustment.

21. In a machine of the class described, the combination with a gripperadjustable lengthwise of the bottom edge of a last, of a member movableto adjust said gripper, means connecting said member to the grip-- per,means for engaging said member frict-ionall'y during its adjustingmovement with pressure suflicient for retaining the gripper in adjustedposition, means tending to re-' turn the gripper to a. normal position,and means automatically operative at. a definite point in thecycle ofoperations of the machine for relieving the pressure on said adustingmember to permit the return of the gripper.

22. In a machine of the class described,

. the combination with a gripper mounted for adjustment lengthwise ofthe bottom edge of a last, of a rack connected to said gripper, a pin onengaging said rack, means forv rotating said pinion to adjust thegripper, and

a friction clutch comp-rising members havmg substantially smoothcontacting faces normally in engagement with each other for holding thepinion in, adjusted position;

23. In a machine of the class. described, the combination With grippersfor engaging an upper at opposite sides of a last, of means foreffecting relative adjustment of said grippers lengthwise of the last,said means comprising a rotatable member, and means for engaging saidmember frictionally during the relative adjustment of the grippers withpressure sufficient for maintaining the adjusted relation of thegrippers.

2a. In a machine of the class described, the combination with grippersfor engaging an upper at opposite sides of a last, of a rotatable memberconnected to each of said grippers for adjusting it lengthwise of thelast, a handle connected to each of said members to permit each memberto be rotated independently of the other, and means for engaging each ofsaid members frictionally during the adjustment of the connectedgripper, With pressure suiiicient for retaining the gripper in adjustedposition.

25.. In a machine of the class described, the combination With grippersfor engaging an upper at opposite sides of a last, of means for movingsaid grippers together in the same direction lengthwise of the last,said means comprising connections to each of the grippers constructed topermit either gripper to be moved also lengthwise of the lastindependently of the other gripper.

26. In a machine of the class described, the combination with grippersfor engaging an upper at opposite sides of a last, of means foroperating. said grippers in unison to fo-redraw the upper, said meanscomprising connections to each of the grippers constructed to permiteither gripper to be moved also lengthwise of the last indepe-ndr entlyof the other gripper, and means en.- abling the operator to manipulatesaid connections for adjusting the upper.

27. In a machine of the class described,

the combination with grippers for engaging an upper at-opposite sides ofa last, of a, rotatable shaft, sleeves on said shaft connected to therespective grippers, and means colmec'ting said sleeves to the. shaft tocause, the grippers to be moved together length Wise of the last byrotation of the shaft, the: connections between the sleeves and theshaft being constructed to permit each sleeve to be turned on the shaftfor adjusting its connected gripper.

28.. In a machine of the class described,

the combination with grippers for engaging an upper at opposite sides ofa last, of a ro tatablev shaft, sleeves on said shaft. connected to therespective grippers, and means con necting said sleeves to the shafttocause the grippers to. be moved together lengthwise of the: last byrotation of the shaft, said means comprising clutches having partsfriction ally engaged under pressure permitting either gripper to beadjusted relatively tothe other against the friction of said parts.

29.. In a machine of, the class described,

the combination with grippers for engaging an upper at opposite sides ofa last, of a rotatable shaft, sleeves on said shaft connected to therespective grippers, friction clutches for connecting said sleeves tothe shaft to cause the grippers to be moved together lengthwise of thelast by rotation of the shaft, said clutches being constructed to permiteither sleeve to be turned on the shaft independently of the other foradjusting the connected gripper and then to hold said gripper inadjusted position, and means for operating said clutches at a definitepoint in the cycle of operations of the machine to release theconnection between the sleeves and the shaft.

30. In a machine of the class described, the combination with last andshoe positioning means, of opposite side grippers, manual means formoving said grippers each independently of the other in either directionlengthwise of the last to adjust the upper on the last, spring means forreturning the grippers to a normal position, means for retaining eachgripper independently in any position of adjustment against the tensionof said spring means, and mechanism operative at a definite time in thecycle of the machine to cause said retaining means to release thegrippers.

31. In a machine of the class described, the combination with last andshoe positioning means, of a side gripper, manual means for moving saidgripper lengthwise of the last to adjust the upper, retaining meanscontinuously effective during such adjustment to prevent retractivemovement of the gripper from any position in which the operator leavesit, and means operative subsequently in the normal cycle of the ma- 83.In a machine of the class described,

the combination with last and shoe positioning means, of opposite side,grippers, said grippers being adjustably movable length-' wise of thelast each independently of the other, a separate clutch deviceassociated with each gripper to retain it in adjusted position, and asingle actuator for controlling both said clutch devices' 34. In amachine of the class described,

the combination with last and shoe positioning means, of a side gripperadjustably movable lengthwise of the last, spring means for returningthe gripper to a normal position, means comprising a clutch forretaining the gripper in adjusted position, and means operative at adefinite time in the cycle of the machine to cause the clutchto releasethe gripper and then to restore the clutch to holding condition beforethe machine comes to rest.

In testimony whereof I have signed my name to this specification.

HANNAH ASHTON,

Ewecutm'm of the will of Orwell Ashton,

deceased.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of latnts, 7

Washington, D. C.

